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JP2009105008A - Connection structure for coaxial cable and circuit substrate - Google Patents

Connection structure for coaxial cable and circuit substrate Download PDF

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Publication number
JP2009105008A
JP2009105008A JP2007277989A JP2007277989A JP2009105008A JP 2009105008 A JP2009105008 A JP 2009105008A JP 2007277989 A JP2007277989 A JP 2007277989A JP 2007277989 A JP2007277989 A JP 2007277989A JP 2009105008 A JP2009105008 A JP 2009105008A
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coaxial cable
slit
circuit board
wide
connection
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JP2007277989A
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Norio Yoshie
憲雄 吉江
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To simplify and solidify a connection structure for a coaxial cable and a circuit substrate. <P>SOLUTION: A connection fitting 22 is wound around the coaxial cable 10 to contact an outer conductor 16. The circuit substrate 12 is formed with a step-shaped slit 26 having an opening at the edge thereof. A narrow-width portion 28 is provided in proximity to the open end of the slit, and then a wide-width portion 30 having a wide width is provided. The connection fitting 22 is configured to be accommodated in the wide-width portion. Moreover, an end surface 34 of the connection fitting is configured to face and abut a step surface 32 on the boundary between the wide-width portion and the narrow-width portion of the slit. The slit side of the wide-width portion 30 is formed with a conductor pattern 40 that is bonded to the connection fitting 22 by solder. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、同軸ケーブルと回路基板との接続部分の構造に関する。   The present invention relates to a structure of a connection portion between a coaxial cable and a circuit board.

同軸ケーブルの用途として、アンテナの信号線が知られている。この同軸ケーブルは、送受信回路等が設けられた回路基板に接続されている。下記特許文献１には、回路基板にスリットを設け、このスリットに合わせて、回路基板上に同軸ケーブルを載せるようにした状態で接続する構造が示されている。   An antenna signal line is known as an application of a coaxial cable. This coaxial cable is connected to a circuit board provided with a transmission / reception circuit and the like. Patent Document 1 below shows a structure in which a slit is formed in a circuit board and a coaxial cable is placed on the circuit board in accordance with the slit.

特開２００３−１６８４９９号公報JP 2003-168499 A

同軸ケーブルと回路基板が確実に接続される必要がある。上記特許文献１においては、はんだ付けでは強度が不足する場合、回路基板にねじ止め等により固定される金具により、同軸ケーブルを回路基板との間に挟み込み、同軸ケーブルを固定する方法が示されている。この場合、ねじ等の金具を基板に固定するための部品、構造を必要とする。   The coaxial cable and the circuit board must be securely connected. In the above-mentioned patent document 1, when strength is insufficient by soldering, a method is shown in which a coaxial cable is sandwiched between a circuit board by a metal fitting fixed to the circuit board by screwing or the like, and the coaxial cable is fixed. Yes. In this case, a part and a structure for fixing a metal fitting such as a screw to the substrate are required.

本願は、簡易な構成で、確実に同軸ケーブルを基板に接続することを目的とする。   An object of the present application is to reliably connect a coaxial cable to a substrate with a simple configuration.

本発明の同軸ケーブルと回路基板の接続構造においては、回路基板に、この回路基板の縁に開口し、開口側の幅が狭い段付きのスリットを設け、一方、同軸ケーブルには、外導体に接続するようにケーブルに巻き付けられる接続金具を設ける。同軸ケーブルをスリット内に収め、スリットの段付き部分と接続金具の端面とを係合させる。   In the connection structure between the coaxial cable and the circuit board according to the present invention, the circuit board is provided with a slit having a step that opens at the edge of the circuit board and has a narrow width on the opening side. A connection fitting wound around the cable is provided so as to be connected. The coaxial cable is housed in the slit, and the stepped portion of the slit is engaged with the end face of the connection fitting.

また、スリットの側面にも回路基板の導体パターンの一部を形成し、このパターンと接続金具をはんだ付けして接合する。   Further, a part of the conductor pattern of the circuit board is also formed on the side surface of the slit, and this pattern and the connection fitting are soldered and joined.

また、スリットは、その先端に、更に同軸ケーブルの内導体に対応する部分を有するようにできる。この部分にも、スリットの側面に導体パターンの一部を形成し、これと内導体をはんだ付けにより接続するようにできる。   Further, the slit can have a portion corresponding to the inner conductor of the coaxial cable at the tip. Also in this portion, a part of the conductor pattern is formed on the side surface of the slit, and this and the inner conductor can be connected by soldering.

また、スリット内において、同軸ケーブルの中心線は、基板の厚みの範囲内に位置するようにできる。   Further, the center line of the coaxial cable can be positioned within the thickness range of the substrate in the slit.

スリットの段付き部と同軸ケーブルの接続金具の端面が係合することで、同軸ケーブルの軸線方向の引き抜きに対する強度が向上する。   Since the stepped portion of the slit and the end face of the connection fitting of the coaxial cable are engaged, the strength of the coaxial cable against drawing in the axial direction is improved.

以下、本発明の実施形態を、図面に従って説明する。図１は同軸ケーブル１０と回路基板１２の分解斜視図、図２は同軸ケーブル接続前の状態を示す斜視図、図３は接続後の状態を示す斜視図である。同軸ケーブル１０は、アンテナ線等として用いられる一般的なケーブルである。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is an exploded perspective view of the coaxial cable 10 and the circuit board 12, FIG. 2 is a perspective view showing a state before the coaxial cable is connected, and FIG. 3 is a perspective view showing a state after the connection. The coaxial cable 10 is a general cable used as an antenna line or the like.

同軸ケーブル１０は、銅線の内導体１４と、内導体１４と同心状に配置され、細い銅線を編んだ網状の外導体１６を含む。内導体１４と外導体１６の間には、これらを絶縁する絶縁体１８が、また外導体１６の外側には、これを覆う被覆２０が設けられている。同軸ケーブル１０の端（図中右端）において、絶縁体１８が除去されて、内導体１４が露出している。また、外導体１６の端はめくられて、被覆２０の上に折り返され、ここで、外部に露出している。この外導体１６の露出した部分の周囲に、接続金具２２が巻き付けるようにかしめられている。これにより、外導体１６と接続金具２２は電気的に接続される。また、図２および３に示すように接続金具２２は、かしめて同軸ケーブル１０に固定された状態で、その外形は略円形となる。しかし、外形はこれに限らず方形等であってもよい。   The coaxial cable 10 includes a copper wire inner conductor 14 and a net-like outer conductor 16 arranged concentrically with the inner conductor 14 and knitted with a thin copper wire. An insulator 18 is provided between the inner conductor 14 and the outer conductor 16, and a coating 20 is provided outside the outer conductor 16 to cover the insulator 18. At the end of the coaxial cable 10 (right end in the figure), the insulator 18 is removed, and the inner conductor 14 is exposed. Further, the end of the outer conductor 16 is turned and folded over the coating 20, where it is exposed to the outside. A connection fitting 22 is caulked around the exposed portion of the outer conductor 16. Thereby, the outer conductor 16 and the connection fitting 22 are electrically connected. 2 and 3, the connection fitting 22 is caulked and fixed to the coaxial cable 10, and the outer shape thereof is substantially circular. However, the outer shape is not limited to this and may be a square or the like.

回路基板１２は、各図において、導体パターンが形成されている面の裏側の面が見える状態で描かれている。回路基板１２には、その縁に開口を有するスリット２６が設けられている。スリット２６は、図示するように、部分ごとに幅が異なる段付き形状となっている。スリット２６の開口端に最も近い幅狭部２８の幅は、同軸ケーブル１０の外径、すなわち被覆２０の外径をほぼ同じか、または若干の余裕をもって収まる寸法となっている。この幅狭部２８に続く幅広部３０は、かしめられた接続金具２２の外径とほぼ同じ寸法となっている。したがって、接続金具２２がかしめられた同軸ケーブル１０を、接続金具２２を幅広部３０の位置に合わせてスリット２６内に収めたとき、幅狭部２８と幅広部３０の境界に形成される段差面３２は、接続金具２２の端面３４と対向する。   In each drawing, the circuit board 12 is drawn in a state where the surface on the back side of the surface on which the conductor pattern is formed can be seen. The circuit board 12 is provided with a slit 26 having an opening at its edge. As illustrated, the slit 26 has a stepped shape with a different width for each portion. The width of the narrow portion 28 closest to the opening end of the slit 26 is such that the outer diameter of the coaxial cable 10, that is, the outer diameter of the covering 20, is substantially the same or fits with a slight margin. The wide portion 30 following the narrow portion 28 has substantially the same dimension as the outer diameter of the crimped connection fitting 22. Therefore, when the coaxial cable 10 with the connection fitting 22 crimped is accommodated in the slit 26 in accordance with the position of the wide portion 30, the step surface formed at the boundary between the narrow portion 28 and the wide portion 30. 32 faces the end face 34 of the connection fitting 22.

スリット２６の、内導体１４に対応する位置には、内導体の直径とほぼ同じ幅を有する先端部３６が設けられている。幅広部３０と先端部３６の間には、中間部３８が設けられている。この中間部３８の幅は、幅広部３０より狭く、先端部３６より広い。より好ましくは、絶縁体１８の直径とほぼ同じか、絶縁体１８が若干の余裕をもって収まる程度の寸法とすることができる。   At a position corresponding to the inner conductor 14 of the slit 26, a tip portion 36 having a width substantially the same as the diameter of the inner conductor is provided. An intermediate portion 38 is provided between the wide portion 30 and the tip portion 36. The width of the intermediate portion 38 is narrower than the wide portion 30 and wider than the tip portion 36. More preferably, it can be set to a size that is substantially the same as the diameter of the insulator 18 or that allows the insulator 18 to be accommodated with a slight margin.

スリット２６の幅広部３０と先端部３６のそれぞれの側面には、導体パターン４０，４２が形成されている。前述したように、回路基板１２の大部分の導体パターンは、図において下側に向いた面に設けられ、そのパターンの一部が、スリットの側面を通って、図に示される面にまで達している。つまり、いわゆるスルーホールと同様の構造となっている。幅広部３０の導体パターン４０は、接続金具２２とはんだ接合されて、導体パターン４０と同軸ケーブルの外導体１６が電気的に接続される。また、先端部３６の導体パターン４２は、同軸ケーブルの内導体１４とはんだ接合されて、これらが電気的に接続される。   Conductor patterns 40 and 42 are formed on the side surfaces of the wide portion 30 and the tip portion 36 of the slit 26. As described above, most of the conductor pattern of the circuit board 12 is provided on the surface facing downward in the drawing, and a part of the pattern reaches the surface shown in the drawing through the side surface of the slit. ing. That is, it has the same structure as a so-called through hole. The conductor pattern 40 of the wide portion 30 is soldered to the connection fitting 22 so that the conductor pattern 40 and the outer conductor 16 of the coaxial cable are electrically connected. In addition, the conductor pattern 42 at the distal end portion 36 is soldered to the inner conductor 14 of the coaxial cable, and these are electrically connected.

図２は、接続金具２２を同軸ケーブル１０に巻き付け、かしめて固定した状態を示している。接続金具２２が巻き付けられた同軸ケーブル１０を、回路基板１２の面に交差する方向より段付きのスリット２６に挿入する。この状態が図３に示されている。接続金具２２が幅広部３０に位置あわせされ、内導体１４が先端部３６に位置あわせされている。そして、接続金具２２と導体パターン４０が、また内導体１４と導体パターン４２がはんだにより接合される。幅広部３０と幅狭部２８の境界の段差面３２と、接続金具２２の端面３４が対向する。これにより、同軸ケーブル１０が回路基板１２に接続された状態で、同軸ケーブル１０に、これをケーブルの軸線に沿って引き抜く方向の力が作用しても、接続金具の端面３４が段差面３２と係合しており、引き抜き力に対抗する。   FIG. 2 shows a state where the connection fitting 22 is wound around the coaxial cable 10 and fixed by caulking. The coaxial cable 10 around which the connection fitting 22 is wound is inserted into the stepped slit 26 from the direction intersecting the surface of the circuit board 12. This state is shown in FIG. The connection fitting 22 is aligned with the wide portion 30, and the inner conductor 14 is aligned with the distal end portion 36. Then, the connection fitting 22 and the conductor pattern 40, and the inner conductor 14 and the conductor pattern 42 are joined by solder. The step surface 32 at the boundary between the wide portion 30 and the narrow portion 28 and the end surface 34 of the connection fitting 22 face each other. As a result, even when the coaxial cable 10 is connected to the circuit board 12 and a force in the direction of pulling the coaxial cable 10 along the axis of the cable acts on the coaxial cable 10, the end surface 34 of the connection fitting and the step surface 32 Engages and opposes pull-out force.

図４は、幅広部３０における同軸ケーブル１０に直交する断面を示す図である。回路基板１２の表面には、メッキ等により導体パターン４０が形成され、スリットの側面３０ａにも導体パターン４０の一部が形成されている。同軸ケーブル１０は、その中心線が回路基板１２の厚さの範囲内、好ましくは厚さの中心に一致するように配置される。接続金具２２は、スリットの側面３０ａに形成された導体パターン４０と接し、これらの隙間の部分をはんだ４４が埋めている。スリットの側面３０ａと導体パターン４０の間は、はんだ４４が流れない程度の隙間が許容される。   FIG. 4 is a diagram illustrating a cross section orthogonal to the coaxial cable 10 in the wide portion 30. A conductor pattern 40 is formed on the surface of the circuit board 12 by plating or the like, and a part of the conductor pattern 40 is also formed on the side surface 30a of the slit. The coaxial cable 10 is arranged such that its center line coincides with the thickness range of the circuit board 12, preferably the center of the thickness. The connection fitting 22 is in contact with the conductor pattern 40 formed on the side surface 30a of the slit, and the solder 44 fills the gap. Between the side surface 30 a of the slit and the conductor pattern 40, a gap that does not allow the solder 44 to flow is allowed.

図５は、先端部３６における同軸ケーブル１０に直交する断面を示す図である。回路基板の表面には、メッキ等により導体パターン４２が形成され、当該先端部のスリット側面３６ａにも導体パターン４２の一部が形成されている。この断面においても、同軸ケーブル１０の中心線は、回路基板１２の厚さの範囲内、好ましくは厚さの中心に一致して配置されている。内導体１４は、スリットの側面３６ａに形成された導体パターン４２と接するか、または若干の隙間をあけて配置され、この先端部３６を埋めるようにしてはんだ４６が位置している。   FIG. 5 is a view showing a cross section orthogonal to the coaxial cable 10 at the distal end portion 36. A conductor pattern 42 is formed on the surface of the circuit board by plating or the like, and a part of the conductor pattern 42 is also formed on the slit side surface 36a of the tip portion. Also in this cross section, the center line of the coaxial cable 10 is disposed within the thickness range of the circuit board 12, and preferably coincides with the center of the thickness. The inner conductor 14 is disposed in contact with the conductor pattern 42 formed on the side surface 36 a of the slit or with a slight gap, and the solder 46 is positioned so as to fill the tip portion 36.

上記のように、スリット側面にも導体パターンが形成されることにより、はんだの接触面積が増加し、結合力が大きくなる。また、スリット２６に同軸ケーブル１０の一部が収まるようにすることで、回路基板と同軸ケーブルを合わせた厚さ方向の寸法が短縮される。   As described above, the conductor pattern is also formed on the side surface of the slit, thereby increasing the contact area of the solder and increasing the bonding force. Further, by allowing a part of the coaxial cable 10 to be accommodated in the slit 26, the dimension in the thickness direction of the circuit board and the coaxial cable is shortened.

この実施形態によれば、同軸ケーブルを回路基板に固定するための複雑な形状の金具を用いる必要がなく、また金具を止めるビス等の部品の使用も抑制することができる。また、同軸ケーブルを回路基板に強固に接続することができる。   According to this embodiment, it is not necessary to use a metal fitting having a complicated shape for fixing the coaxial cable to the circuit board, and the use of a part such as a screw for fixing the metal fitting can be suppressed. Further, the coaxial cable can be firmly connected to the circuit board.

本実施形態の同軸ケーブル１０と回路基板１２の要部を示す分解斜視図である。1 is an exploded perspective view showing main parts of a coaxial cable 10 and a circuit board 12 of the present embodiment. 同軸ケーブル１０と回路基板１２の接続前の状態を示す斜視図である。It is a perspective view which shows the state before the connection of the coaxial cable 10 and the circuit board 12. FIG. 同軸ケーブル１０と回路基板１２を接続した状態を示す斜視図である。It is a perspective view which shows the state which connected the coaxial cable 10 and the circuit board 12. FIG. スリットの幅広部における同軸ケーブルに直交する断面を示す図である。It is a figure which shows the cross section orthogonal to the coaxial cable in the wide part of a slit. スリットの先端部における同軸ケーブルに直交する断面を示す図である。It is a figure which shows the cross section orthogonal to the coaxial cable in the front-end | tip part of a slit.

符号の説明Explanation of symbols

１０ 同軸ケーブル、１２ 回路基板、１４ 内導体、１６ 外導体、２２ 接続金具、２６ スリット、２８ 幅狭部、３０ 幅広部、３２ 段差面、３４ 接続金具の端面、３６ 先端部、４０，４２ 導体パターン、４４，４６ はんだ。   DESCRIPTION OF SYMBOLS 10 Coaxial cable, 12 Circuit board, 14 Inner conductor, 16 Outer conductor, 22 Connection metal fitting, 26 Slit, 28 Narrow part, 30 Wide part, 32 Step surface, 34 End face of connection metal fitting, 36 Tip part, 40, 42 Conductor Pattern, 44, 46 Solder.

Claims (3)

同軸ケーブルと回路基板の接続構造であって、
同軸ケーブルの外導体と接触して、当該同軸ケーブル周囲に巻き付けられた接続金具と、
回路基板の縁に開口端を有するように形成され、同軸ケーブルが収められる接続スリットと、
を含み、
接続スリットは、開口端から幅の狭い幅狭部が延び、これに続いて幅の広い幅広部が延びて形成されて、幅狭部と幅広部の境界に段差が形成され、さらに幅広部のスリット側面には、回路基板の導体パターンの一部が形成され、
前記接続金具が、幅広部のスリット側面の導体パターンとはんだにより接合され、当該接続金具の端面が、幅狭部と幅広部の境界の段差と係合している、
接続構造。 A connection structure between a coaxial cable and a circuit board,
A connection fitting wound around the coaxial cable in contact with the outer conductor of the coaxial cable;
A connection slit that is formed to have an open end at the edge of the circuit board and accommodates a coaxial cable;
Including
The connecting slit is formed by extending a narrow narrow part from the opening end, followed by a wide wide part, and forming a step at the boundary between the narrow part and the wide part. A part of the conductor pattern of the circuit board is formed on the side surface of the slit,
The connection fitting is joined by solder to the conductor pattern on the side surface of the slit of the wide portion, and the end surface of the connection fitting is engaged with a step at the boundary between the narrow portion and the wide portion,
Connection structure. 請求項１に記載の同軸ケーブルと回路基板の接続構造であって、
接続スリットは、先端に、同軸ケーブルの内導体と接続される回路基板の導体パターンの一部が側面に形成された先端部を有し、
同軸ケーブルの内導体と、前記先端部のスリット側面に形成された導体パターンとがはんだ付けされる、
接続構造。 A connection structure between a coaxial cable and a circuit board according to claim 1,
The connection slit has, at the tip, a tip portion in which a part of the conductor pattern of the circuit board connected to the inner conductor of the coaxial cable is formed on the side surface,
The inner conductor of the coaxial cable and the conductor pattern formed on the slit side surface of the tip are soldered.
Connection structure. 請求項２に記載の同軸ケーブルと回路基板の接続構造であって、
接続スリット内において、同軸ケーブルの中心線は、基板の厚みの範囲内に位置する、
接続構造。 The coaxial cable and circuit board connection structure according to claim 2,
Within the connection slit, the center line of the coaxial cable is located within the thickness range of the substrate.
Connection structure.
JP2007277989A 2007-10-25 2007-10-25 Connection structure for coaxial cable and circuit substrate Pending JP2009105008A (en)

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WO2009128567A1 (en) * 2009-05-29 2009-10-22 甲府電器部品株式会社 Insulated antenna plug
KR200457150Y1 (en) 2009-10-29 2011-12-07 주식회사 에이스테크놀로지 Cable Base Connection Structure
KR101177866B1 (en) 2011-03-24 2012-08-28 주식회사 케이엠더블유 Contact device for coxial rf cable
CN112868137A (en) * 2018-10-17 2021-05-28 皇家飞利浦有限公司 Electronic component of interventional medical device

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009128567A1 (en) * 2009-05-29 2009-10-22 甲府電器部品株式会社 Insulated antenna plug
KR200457150Y1 (en) 2009-10-29 2011-12-07 주식회사 에이스테크놀로지 Cable Base Connection Structure
KR101177866B1 (en) 2011-03-24 2012-08-28 주식회사 케이엠더블유 Contact device for coxial rf cable
WO2012128536A3 (en) * 2011-03-24 2012-12-27 주식회사 케이엠더블유 Cable connection device
JP2014509061A (en) * 2011-03-24 2014-04-10 ケーエムダブリュ・インコーポレーテッド Cable connection device
US9136655B2 (en) 2011-03-24 2015-09-15 Kmw Inc. Cable connection device
CN112868137A (en) * 2018-10-17 2021-05-28 皇家飞利浦有限公司 Electronic component of interventional medical device
JP2021533949A (en) * 2018-10-17 2021-12-09 コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. Electrical components of intervention medical equipment
JP7013621B2 (en) 2018-10-17 2022-01-31 コーニンクレッカ フィリップス エヌ ヴェ Electrical components of intervention medical equipment

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